SCIEX Cation Analysis Kit For P/ACE MDQ and P/ACE MDQ plus Capillary Electrophoresis Systems. Instruction Guide
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1 For P/ACE MDQ and P/ACE MDQ plus Capillary Electrophoresis Systems A49109AE May 2015
2 AB Sciex Pte. Ltd and its affiliates disclaims all warranties with respect to this document, expressed or implied, including but not limited to those of merchantability or fitness for a particular purpose. In no event shall AB Sciex Pte. Ltd. and its affiliates be liable, whether in contract, tort, warranty, or under any statute or on any other basis for special, incidental, indirect, punitive, multiple or consequential damages in connection with or arising from this document, including but not limited to the use thereof. For research use only. Not for use in diagnostic procedures. The trademarks mentioned herein are the property of AB Sciex Pte. Ltd. or their respective owners. AB SCIEX is being used under license and SCIEX Separations is a part of AB Sciex AB Sciex Find us on the World Wide Web at AB Sciex 500 Old Connecticut Path Framingham, MA USA 2 of 22 A491089E
3 Contents Chapter 1 Using the Cation Analysis Kit Introduction Safety Materials and Reagents Storing Kit Components Cleaning Vial Caps Turning on the UV Lamp Cleaning the Capillary Interface Installing the Capillary Conditioning a New Capillary Storing the Capillary Preparing the Buffer Trays Preparing the Sample PCR Vial Setup P/ACE MDQ System Universal Vial Setup P/ACE MDQ plus System Running Methods Initial Conditions for All Methods Time Program for the Cation Separation Method Time Program for Cation Shutdown Method Checking System Performance with the Cation Test Mix Integration Parameters Troubleshooting Appendix A Filter Installation Installing the 200 nm Filter Appendix B System Configuration Configuring the P/ACE MDQ or P/ACE MDQ plus System Activating Caesar Integration A491089E 3 of 22
4 Contents 4 of 22 A491089E
5 1 Introduction The contains the supplies necessary for the separation and quantitation of cations, using the SCIEX P/ACE MDQ and P/ACE MDQ plus Capillary Electrophoresis Systems. Each cation kit yields approximately 500 tests. Note: The system must be equipped with a UV detector and a 200 nm filter to perform this assay. This kit permits the analysis of small inorganic cations and aliphatic amines, which are often UV transparent. For this reason, the separation buffer contains a chromophore, and detection is achieved in indirect mode. The separation method is performed under normal polarity so that the positively charged ions migrate toward the cathode (the negatively-charged electrode). In addition, the capillary is dynamically coated first with a polycation and later with a polyanion, which directs the electroosmotic flow (EOF) toward the cathode, thus reducing the separation time while maximizing migration time reproducibility. IMPORTANT: The main focus of this application is in the biopharmaceutical market. This product can also be used for environmental testing and food and beverage markets. This product is for research use only. It is not for use in diagnostic procedures. No clinical decision or patient notification may be made based on results using this research assay. Safety Refer to the Safety Data Sheets (SDS) information, available at sciex.com/safety-data-sheets, regarding the proper handling of materials and reagents. Always follow standard laboratory safety guidelines. A491089E 5 of 22
6 Materials and Reagents Table 1-1 Kit Contents (PN A53540) Component Quantity Cation Coating A 1 Cation Coating B 1 Cation Separation Buffer 1 Conditioner Na 1 Conditioner Li 1 Cation Internal Standard 1 Cation Test Mix 1 Capillary, 50 cm, 75 µm I.D. 3 pieces Rinse Solution 2 Ion Analysis Insert 1 Table 1-2 Materials Required but Not Included in This Kit Part P/ACE System Description Number MDQ MDQ plus 200 nm filter (see note below) Adequate pipettes and pipette tips PCR vials (100-pack) ml glass vials (100-pack) Red caps for 2 ml glass vials (100-pack) PCR vial holders (50-pack) PCR vial springs (10-pack) Gray caps for PCR vials (50-pack) Universal plastic vials (100-pack) A62251 Blue rubber caps for universal vials (100-pack) A62250 Storing Kit Components Upon receipt, store all components at room temperature and away from direct sunlight. 6 of 22 A491089E
7 Cleaning Vial Caps Note: The vial caps may contain impurities that can be detected with the Cation Analysis Kit, therefore wash the caps before use. 1. Using a clean beaker, rinse the vial caps twice with double-deionized (DDI) water. Do not use soap. 2. Let the caps soak in DDI water for at least one hour, making sure the caps are completely submerged. 3. Remove the caps from the water. 4. To dry the caps, either place them in an oven set at 55 C for two hours, or allow them to dry overnight at room temperature covered by clean, lint-free laboratory tissue. The vial caps become compressed and lose elasticity during use, which can lead to pressure failures and current leakage errors. Therefore, reusing caps is not recommended. Turning on the UV Lamp Turn on the UV lamp and allow the system to warm up for at least 30 minutes prior to experimentation. Cleaning the Capillary Interface Carefully clean the system electrodes and interface block as described in the Maintenance Procedure section of the instrument manual. Repeat this procedure after every 24 hours of operation. Installing the Capillary 1. Install a 75 µm I.D., 60.2 cm long (50 cm from injection site to detector) fused-silica capillary into a capillary cartridge using the Capillary Cartridge Rebuild Instructions (PN ). 2. Use an 800 µm aperture in the cartridge. This aperture is labeled with an After the capillary has been installed in the cartridge, insert the cartridge in the instrument. 4. Close the cartridge cover and tray cover. A491089E 7 of 22
8 Conditioning a New Capillary After installing a new capillary, rinse the capillary for one minute with Conditioner Na. Wait four minutes, then rinse for 30 seconds with Conditioner Na. Rinse for one minute with Rinse Solution. Use 20 psi of pressure for all rinses. Storing the Capillary After use, store the capillary on the instrument or in the original capillary storage box, with both ends submerged in Rinse Solution. Do not allow the capillary ends to dry, because the capillary may become plugged. After a long storage period, or at the start of each day, condition the capillary using the Capillary Conditioning method described in Running Methods on page 11. Caution: Do not share capillaries between applications. If the capillary has been used for anion analysis, do not use it for cation analysis. Preparing the Buffer Trays Use the correct vials and caps for your system: For the P/ACE MDQ system use glass vials and red caps For the P/ACE MDQ plus system use universal vials and blue caps Replace all vials after twenty runs or after 24 hours inside the instrument. The increment option in the method can be used to automatically increment the vials every twenty runs on both buffer trays. 1. Fill the vials with equal volumes of each reagent in Table 1-1 and position them in the buffer trays (refer to Figure 1.1). Use the correct volume for your system: For the P/ACE MDQ system 1.4 ml For the P/ACE MDQ plus system 1.5 ml 2. In the Waste position, place a vial partially filled with Rinse Solution. Use the correct volume for your system: For the P/ACE MDQ system 700 µl For the P/ACE MDQ plus system 600 µl 3. Close each vial with a clean cap. 8 of 22 A491089E
9 Figure 1.1 Buffer Tray Configuration for Cation Analysis 4. Load the Inlet Buffer and Outlet Buffer trays in the instrument. Note: A small amount of sodium can be detected when using Conditioner Na (0.1 M NaOH). If you are analyzing for sodium, fill the buffer inlet vial at position F1 with Conditioner Li (0.1 M LiOH) to minimize sodium carryover. However, a small amount of lithium may then be detected. Note: The rinse solution used in this kit is ultra-purified water specifically for capillary electrophoresis analysis of ions. Preparing the Sample Depending on the concentration of the analytes, the sample should be injected as is or diluted. Dilution should be done so that the final concentration of the sample cations is between 1 ppm and 50 ppm. Special care should be taken to verify the ph of the sample, which should be slightly acidic, by adding 3 mm HCl or nitric acid. The Cation Internal Standard (I.S.) consists of 0.20 M lithium chloride (LiCl), which is equivalent to 1388 ppm of lithium ion. The I.S. can be used in the quantitation of the sample cations. To use it, dilute the I. S. by a factor of 50 with the sample. For example, mix 4 μl of I.S. with 200 μl of sample to yield 28 ppm of lithium ion. A491089E 9 of 22
10 PCR Vial Setup P/ACE MDQ System Fill a PCR vial with 200 µl of test or sample mix. Make sure there are no air bubbles at the bottom of the PCR vial. Air bubbles can affect the sample injection. If bubbles exist, centrifuge the vials for 2 minutes at 1000 x g and repeat if necessary. Place the PCR vial in a PCR holder equipped with a vial spring (Figure 1.2). Seal the PCR vial with a clean gray cap and place it in the inlet sample tray. Figure 1.2 PCR Vial Setup P/ACE MDQ System Item Description 1 Vial cap (PN144656) 2 PCR vial (PN ) 3 PCR vial spring (PN ) 4 PCR vial holder (PN ) 10 of 22 A491089E
11 Universal Vial Setup P/ACE MDQ plus System Fill a PCR vial or micro vial with 200 µl of test or sample mix. Make sure there are no air bubbles at the bottom of the vial. Air bubbles can affect the sample injection. If bubbles exist, centrifuge the vials for 2 minutes at 1000 x g and repeat if necessary. Place the vial into the universal vial and seal with a blue cap (Figure 1.3). P Figure 1.3 Universal Vial Setup P/ACE MDQ plus System p Item Description 1 Universal vial cap (PNA62250) 2 PCR vial (PN ) 3 Universal vial (PN A62251) 4 Micro vial inside of universal vial Running Methods Three methods are required for performing cation analysis: Cation Capillary Conditioning Cation Separation Cation Shutdown Save all three methods, with their respective names, in the 32 Karat folder. Note: These methods can be downloaded from sciex.com/products/capillaryelectrophoresis-instruments/p/ace-mdq-plus (click Resources). A491089E 11 of 22
12 Initial Conditions for All Methods All three methods utilize the same Initial Conditions (Figure 1.4) and UV Detector Settings (Figure 1.5). Figure 1.4 Initial Conditions for Cation Capillary Conditioning, Cation Separation, and Cation Shutdown Methods Figure 1.5 UV Detector Initial Conditions for Cation Capillary Conditioning, Cation Separation, and Cation Shutdown Methods 12 of 22 A491089E
13 Figure 1.6 Time Program for Cation Capillary Conditioning Method Time Program for the Cation Separation Method Figure 1.7 Time Program for Cation Separation Method Time Program for Cation Shutdown Method Figure 1.8 Time Program for Cation Shutdown Method A491089E 13 of 22
14 Checking System Performance with the Cation Test Mix To check system performance, run the Cation Test Mix after performing the Capillary Conditioning method. Compare the electropherogram obtained with the one shown in Figure 1.9. The electrical current during the separation should be stable around +53 µa. A positive value indicates that normal polarity was used in the separation. Figure 1.9 Cation Organic Test Mix Typical Electropherogram In Figure 1.9, the concentration of each ion in the test mix is approximately 20 ppm. Integration Parameters The integration parameters in the analysis method should be optimized for each sample. As a starting point, use the values in Figure These values will successfully integrate the Cation Test Mix. Figure 1.10 Recommended Integration Parameters and Initial Values The parameters have the following effects on the integration: 14 of 22 A491089E
15 Integration off sets time intervals in the electropherogram that are not integrated. Width sets the sensitivity of the peak detection regarding changes in the baseline. Threshold determines how high a peak must rise above the baseline noise before it is recognized as a peak. Shoulder sensitivity enables the detection of shoulders in large peaks. Its value specifies the slope value for splitting a peak. (Optional, not shown) Minimum Cluster Distance can be used to split peaks when shoulder sensitivity does not provide proper integration. It specifies the distance between non-baseline separated peaks so that they are not identified as one peak. Additional help is available from the 32 Karat Software Online Help. Troubleshooting Problem Possible Cause Corrective Action Unstable current Problem with capillary Replace capillary with new one No peaks Wrong polarity in method Use reverse polarity in method No sample vial or sample at wrong location Check sample vial position No stable migration time Presence of ghost peaks Ammonium (NH 4 + ) peak is missing or too small. Buffer depletion Contaminated buffer vials Vial caps are wet Vial caps are dirty Over time, ammonium converts to ammonia (NH 3 ) and evaporates Replace all buffer vials after every 20 runs Replace all buffer vials after every 20 runs Replace caps with clean, dry caps Always use clean caps Replace samples with fresh ones and analyze immediately. A491089E 15 of 22
16 16 of 22 A491089E
17 Filter Installation A Installing the 200 nm Filter 1. Before installing the filter, check the condition of the filter as instructed in the appropriate guide for your system. For the P/ACE MDQ system Installation UV detector wavelength filters in the P/ACE MDQ Installation and Maintenance Guide (PN A36419). For the P/ACE MDQ plus system Install Wavelength Filters for the UV Detector in the P/ACE MDQ plus System Maintenance Guide (PN B54955). 2. Set the buffer trays to the load position in the Direct Control window. 3. Lift the cartridge cover door and allow the coolant to drain from the capillary cartridge. 4. Turn off the instrument. 5. Loosen the two thumb screws and lift the insertion bar. 6. Remove the capillary cartridge. 7. Loosen the thumb screws and remove the optics source assembly. 8. Wearing clean gloves, remove the filter wheel access cover and rotate the filter wheel to position Place the filter at position 2 with the reflective side facing inward (toward the back of the instrument). Do not touch the filter with your hands. 10. Reinstall the filter wheel cover on the optics source assembly. 11. Replace the optics source assembly and tighten the two thumb screws. 12. Place the cartridge inside the instrument, lower the insertion bar, and tighten the two thumb screws. 13. Close the cartridge cover door. 14. Turn on the instrument. 15. Follow the instructions in Configuring the P/ACE MDQ or P/ACE MDQ plus System on page 19 to configure the 32 Karat software for performing cation analysis. A491089E 17 of 22
18 Filter Installation 18 of 22 A491089E
19 System Configuration B Configuring the P/ACE MDQ or P/ACE MDQ plus System IMPORTANT: Make sure that the system is turned on, and that the UV detector has been installed. 1. Open the 32 Karat software. 2. Right-click in the right pane of the Enterprise window. 3. Select New > Instrument. A new icon that looks like a question mark appears. 4. Right-click the question mark icon and select Rename. 5. Rename this icon Cation. 6. Right-click the Cation icon and select Configure. 7. Select P/ACE MDQ CE as the instrument type and click Configure. A new window opens. 8. Click the UV detector icon on the left. 9. Click the Green arrow. The UV detector icon should now be on the right side under Configured Modules. Figure B.1 P/ACE MDQ CE Configuration for Cation Analysis 10. Double-click the UV Detector icon to display the configuration settings. A491089E 19 of 22
20 System Configuration If necessary, edit the settings to match the appropriate figure. For the P/ACE MDQ system refer to Figure B.2. For the P/ACE MDQ plus system refer to Figure B.3. Figure B.2 Cation Analysis Settings P/ACE MDQ System Figure B.3 Cation Analysis Settings P/ACE MDQ plus System 11. Click OK to accept the detector configuration. 20 of 22 A491089E
21 System Configuration 12. Follow the instructions in Activating Caesar Integration. Activating Caesar Integration The Caesar Integration must be activated in the cation configuration to perform peak integration and quantitation. 1. In the CE Configuration dialog, click Options (Figure B.4) Figure B.4 P/ACE MDQ CE Configuration for Cation Analysis 2. Under General, make sure that only Qualitative Analysis and Caesar Integration are selected (Figure B.5). A491089E 21 of 22
22 System Configuration Figure B.5 Configuration Options 3. Click OK in the next three windows to accept the changes. 22 of 22 A491089E
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